Membrane Aerated Biofilm Reactors (MABR)
A recent innovation is the use of Membrane Aerated Biofilm Reactors (MABR) to control the biological treatment through an attached growth system made of an array of hollow fibre gas permeable membranes. The MABR habitat creates an ideal environment to support a robust biofilm which absorbs and consumes carbon and nitrogen based pollutants.
Air from the environment is supplied at low pressure and oxygen required by the microbes is supplied directly by diffusion across the membranes.
The MABR is deployed in a modular cage design which is supplied as a packaged plant or retrofitted directly into an existing aeration tank. The successful operation of these systems depends on the careful monitoring of air supplied and estimation of the oxygen consumed by the microbes.